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Finding the Fourth Proportional to 629,626.90, 868,859.79 and 343,140.82

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Solution

The fourth proportional to 629,626.90, 868,859.79 and 343,140.82 is: 473,520.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,626.90 : 868,859.79 = 343,140.82 : x
  2. Step 2: Convert to fraction form
    629,626.90/868,859.79 = 343,140.82/x
  3. Step 3: Cross multiply
    629,626.90x = 868,859.79 × 343,140.82
  4. Step 4: Simplify right side
    629,626.90x = 298,141,260,805.63
  5. Step 5: Solve for x
    x = 298,141,260,805.63/629,626.90
  6. Step 6: Final answer
    x = 473,520.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.